Support for Mill 1.x

What's Changed

• Update org.eclipse.jgit to 7.1.0.202411261347-r by @joan38 in #98
• Update munit to 1.0.4 by @scala-steward in #99
• Update munit to 1.1.0 by @scala-steward in #103
• Support Mill 0.13.0-M0 by @joan38 in #105
• Update Scalafmt to 3.8.6 by @joan38 in #106
• Support Mill 0.13.0-M0-93-a6992e by @joan38 in #112
• Build definition on Mill 0.13 by @joan38 in #113
• Support Mill 1.0.0-RC1 by @joan38 in #114
• Support Mill 1.x by @joan38 in #115
• Publish to Sonatype Central by @joan38 in #116

Full Changelog: v0.2.7...v0.3.0